Target Wheel and PBW Target Imaging Systems Mattias

Target Wheel and PBW Target Imaging Systems Mattias Wilborgsson Work Unit Leader, Monolith Systems www. europeanspallationsource. se

Target Station layout Proton Beam Instrumentation Plug Proton Beam Window Neutron Beam Extraction Proton beam envelop representation Target Wheel Moderator and Reflector Plug 2

Target Station components Proton Beam Window (PBW) • Function – Separating the monolith atmosphere from the high vacuum of the accelerator beam pipe • Window Al 6061 -T 6 Expected lifetime – A half up to one year at full power operation (5 MW) • Target Imaging Systems – Luminescent coating • Thickness of the coating needs to be defined • Quality assured uniformity of the coating • Max temp. 130°C for < 0. 5 h • Coating procedure needs to be qualified – Fiducials • Placement and dimensions not defined • Manufacturing process needs to be defined Luminescent coating

Target Station components Target Wheel/ Beam Entrance Window (BEW) • Function – Conversion of a highly intense, pulsed proton beam to free neutrons via the spallation process – Distribute the power over a large volume and remove heat from the target material • Expected lifetime – The current estimation of the maximum target wheel lifetime is 5 to 10 years • Target Imaging – Luminescent coating on BEW • Thickness of the coating needs to be defined • Quality assured uniformity of the coating • Coating procedure needs to be qualified BEW

Schedule PBW Preferable to coat the PBW in Trollhättan before assembly of complete plug • Maufacturing finished Q 3 2018 • Installation in Monolith September 2019 BEW Portable combustion-gun Coating on the complete TW can be made in Lund • TW/BEW delivered to Lund Q 2 2019 • Installation in Monolith February 2020 PBIP Test assemble of mirrors in optical slices in Spain • Manufacturing of slices finished Q 1 2019 Final assemble and alignment of mirrors in Mock-Up • PBIP delivered to Lund Q 2 2019 • Installation in Monolith April 2020

The End Thank you! 6